answers this question by examining how people evaluate evidence, how science is conducted, and how a multi-disciplinary framework to risk can inform policy by bridging the gap between experts and the public. This framework is then applied to four case studies: pesticides, genetically engineered foods, climate change, and nuclear power. By tracing the history of the science, policies and regulations, and evaluating arguments made about these risks, Andrew J. Knight provides a guide to understand how experts and the public view risks.